An Au8 Cluster Fortified by Four Ferrocenes
An Au8 Cluster Fortified by Four Ferrocenes
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由四种二茂铁强化的 Au8 簇
DOI：
10.1021/acs.jpca.0c03366
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发表时间：
2020-07-23
影响因子：
2.9
通讯作者：
Zhu, Yan
中科院分区：
文献类型：
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作者：
Li, Shuo Hao;Liu, Xu;Zhu, Yan
原子级精确的金属簇合物由于其物理化学性质与原子级堆积结构之间的精确相关性而成为研究的热点。本文合成了四个二茂铁配体（DPPF）封端的Au-8簇合物，其中二茂铁不仅可以指导Au-8簇合物的精确形成，而且可以固化Au-8簇合物的结构模式。Au-8（DPPF）（4）簇合物作为非均相催化剂对CO氧化反应具有良好的催化性能，这主要是由于其在反应条件下不易聚集成大颗粒。结果表明，均裂膦的解离性质和Fe诱导的解离后重构效应可能增强了Au-8（DPPF）（4）的催化性能。
Atomically precise metal clusters are now in the research spotlight, owing to the precise correlation between the physicochemical properties and their atomic-packing structures at an atomic-level. Herein we synthesized an Au-8 cluster capped by four ferrocene ligands (DPPF), in which the ferrocene not only can direct the precise formation of the Au-8 cluster, but also can solidify the structural pattern of the Au, cluster. The Au-8(DPPF)(4) clusters as heterogeneous catalysts can achieve efficiently catalytic performances for the CO oxidation reaction, mainly due to the resistance to aggregation into large particles under reaction conditions. Our results suggest that the homolytic phosphine dissociation nature and the postdissociation reconstruction effect induced by Fe may enhance the catalytic performances of Au-8(DPPF)(4).